Kopff



(No Model.)

B. STEIN. GAS AND PETROLEUM MOTOR.

Patented Jul -12, 1892.

2 4 1 caves I van 2"}: J2-

can/Sax 'iez'n yggw *MJQ afozw-afd UNITED STATES PATENT OFFICE.

BERNHARD STEIN, OF BERLIN, GERMANY, ASSIGNOR TO THE. BERLDIER MASCHINENBAU ACTIEN-GESELLSCIIAFT, VORMALS L. SCHlVAR'lZ} KOPFF, OF SAME PLACE.

GAS me PETROLEUM MOTOR.

srncmcanon" forming part of Letters Patent in. 478,651, dated my 12,1892. Applioatim filed December 24,1890. Serial No. 876,760. (No model) Patented ln ssgllnll November 25.18%,10- 19,171-

To all? whom it may concern: v Be it known that I, Bsnsnsnn STEIN, a subject of the Emperor of Austria, and a resident of Berlin,in the Kingdom of Prussia, German Empire, have invented certain new and use- "ful Improvements in Gas and Petroleum Motors, (for which I have obtained a patent in England, No. 19,177 1,da'ted November 25, 1890,) of which the following is a full, clear, and ex,

act specification.

v Myinvention relates to gasrmoters in which the explosive mixture is introduced into the explosioncylinder in two charges having a difierent proportion of gas-that is to say,

gasmotors in which the first charge of the combustible-mixture contains a greater proportion of air than the second charge, which only contains as much air as is necessary for the complete combustion ofi'he gas; and my :0 invention consists in a valve arrangement by means of which such alterations of the proportions of gas and air may be caused in a. very eifective and reliable way.

In order to make my invention more clear,

2 5 I refer to the accompanying drawing, in whic the figure is a sectional elevation of the valve arrangement.

In carrying my invention into efiect I pro-- .vide a chamber or sleeve z between the ex- 39 auxiliary flame in the usual manner and sepa= rated from sleeve z by a valve 10, which at the end of-compression is opened by any suitable means in order to allow a. certain guautity of the strong mixture to enter tube for being exploded therein and to expdode or ignite thereby the contents of the cylinder, too. The end d of tube d is curved, as shown, or it may form a bulb. At the rear of said sleeve z there is arranged a valve 1', which, after being opened by lever t and camdisk k on shaft :0, serves for establishing a or interrupting the communication of sleeve 2 with the open air. Such communication is afforded by channel Z, into which leads another. ohannel 9, serving for conveying gas to the motor. Channel 9 may be opened or closed by a valve 9, actuated by a lever t plosion-cylinder c and ignition-tube d, the latterbeing heated red-hot by means of an.

and by a cam-disk k" in like manner as lever. 25.. The channel Z is provided at itsrear endwith a valve 1', which is nctuated'by a third lever t and by a cam-disk k in exactly the same wayes the levers t and t. This valve Z is adapted to lesson or to enlarge the (mm munication established between air-channel Z and the outer air by the branch channel P.

Rolls-p, p, and p are attached to the ends of of valve 9'. Shortly before the suction period is closed the valve Z is lifted, so as to diminish the quantity of air entering channel Z by branch channel Z and the mixture now entering the cylinder is of stronger condition, owing to the greater proportion of gas. Im

stead of lifting valve 1' it may also belowered, this having the same effect, as described. The said strong mixture formsthe proper explosive gas, which now fills the rear part of the cylinder as well as the sleeve 5. Now when the valve w is opened by any suitable means a part of the strong mixture enters the ignition-tube d and the contents of the cylinder are exploded in known manner. That part ofv the combustion-gases which remains in tube (1 is at the entrance of the mixture pressed into the tube or bulb d, thus insuriug quick and reliable ignltion'of the'stroug mixture contained in tube d.

' Having thus fully described the nature of my said invention, what I desire to secure by Letters Batent of the United States is- The combination of sleeve inserted between cylindercaud lgnition-tuberland valve 0', closing or establishing communication between sleeve 2 and air-ohannell, with valve 5 9, closing or establishing communication between gas-channel iq apd air-channel l, and with valve 1, lessen ng or enlarging communication between air-channel Z and the open In testimony whereof I have signed this air, and operating means constructed, as despecification in the presence of two siibseribscribed, so that said Valves rand g are opened in g witnesses.

his the beginning of the suction period and BERNHARD STEIN.

5 passage of valve Z is reduced at or near the; Witnesses:

eiose of that period, for the purpose as 0;,- ADOLF SCHEIBEL, :rcriheki.

;, ROBERT SEMLER. 

